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Finding the Fourth Proportional to 251,409.66, 346,846.41 and 143,921.76

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Solution

The fourth proportional to 251,409.66, 346,846.41 and 143,921.76 is: 198,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,409.66 : 346,846.41 = 143,921.76 : x
  2. Step 2: Convert to fraction form
    251,409.66/346,846.41 = 143,921.76/x
  3. Step 3: Cross multiply
    251,409.66x = 346,846.41 × 143,921.76
  4. Step 4: Simplify right side
    251,409.66x = 49,918,745,776.88
  5. Step 5: Solve for x
    x = 49,918,745,776.88/251,409.66
  6. Step 6: Final answer
    x = 198,555.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.